Blue Sky is a name for the Arapaho People.

Source: https://gazette.com/news/local/mount-evans-name-change-hits-snag/article_ce914c59-675c-5e45-b0e6-d92f5dc78c6c.html

He wrote that the name Mount Blue sky pays homage to the Cheyenne and Arapaho peoples and Colorado’s frequent sunny weather and blue skies.

Source: https://www.gjsentinel.com/news/polis-backs-students-choice-for-renaming-delta-county-sites/article_de5de7a2-ba12-11ed-885e-d3801d04d1a8.html

It is the story of the Sand Creek Massacre in 1864, in which American troops killed more than 230 Cheyenne and Arapaho people.

Source: https://www.nytimes.com/2023/10/18/arts/design/colorado-sand-creek-massacre.html

On Tuesday, Polis wrote to Trent Palmer, BGN executive secretary, domestic names, endorsing the change on behalf of the State of Colorado and stakeholders, including the Cheyenne and Arapaho tribes.

Source: https://www.greeleytribune.com/2023/03/04/name-change-mount-blue-sky-mount-evans-polis-endorsement/

Participants at the ceremony included members of the Northern Cheyenne, Northern Arapaho and Ute Mountain Ute tribes.

Source: https://www.canoncitydailyrecord.com/2023/03/17/mount-evans-blue-sky-renaming-delay-northern-cheyenne/

To my tribe, the Arapaho, we call (the Boar’s Tusk) “the Parents,” because it looks like two people standing there with blankets over them.

Source: https://www.hcn.org/articles/indigenous-affairs-interview-bringing-co-stewardship-to-wyomings-red-desert